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(No Model.)

G. W. GRAVES. Y GAS HEATING ATTACHMENT POB. SOLID FUEL STOVBS.

No. 495,169. Patented'Apr. 1 1, 189s.

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UNITED STATES GEORGE w. GRAVES,

PATENT OEEIGE.

OF NEW YORK, N. Y.

GAS HEATING ATTACHMENT FOR SOLID-FUEL STOVES.

SPECIFICATION forming part of Letters Patent No. 495,169, dated April r11, 1893.

Application tiled May 9, 1892. Serial No. 432,265. (No model To a/ZZ whom it may concern.-

Be it known that I, GEORGE W. GRAVES, residing at the city of New York, county and State of New York, have invented certain new and useful Improvements in Gas Heating Attachments to Solid-Fuel Stoves, of which the following is a full, clear, and exact description. Y

My invention relates to gas heating attachments to coal or wood burning stoves or ranges, and has for its object to provide said stoves or ranges with gas or fluid fuel burners so constructed that when they are not in use, ashes orvdust from the ordinary coal or wood re may be excluded from the flame apertures and interior of the burners, thus preventing choking up of the burners and maintaining themj in proper operative condition.

The invention will first be described and then will be particularly defined in claims hereinafter set forth.

Reference is to be had to the accompanying drawings forming a part of this specification, and in which similar letters of reference indicate corresponding parts in allthe figures.

Figure. 1, is a front sectional perspective View of a cooking stove or range embodying my improvements. Fig. 2, is a detailed vertical section through one of the auxiliary gas burners and adjacent parts of the stove-drawn to a larger scale. Fig. 3, is a detail view of the top of the burner head shown in Fig. 2. Fig.4, is a detail plan View of the stove top. Fig. 5, is a perspective view of the top ring or skeleton cooking vessel support adapted to the stove pot hole nearest the smoke pipe or flue; and Figs. 6 and 7, respectively, represent a plan and vertical section of a modified form of the uid fuel burner.

In Fig. 1, of the drawings, is represented one of many ordinary patterns of cooking stoves'or ranges to which my invention is applicable, and which I have selected to illustrate my improvements. This stove or range has the usual coal or wood or solid fuel grate or fire box A,next which is the ordinary baking oven B, surrounded for the most part by flues b, for heating it by passage through said flues of the hot products from the fire box toward the smoke pipe or flue connection C, of the stove. The auxiliary gas heating attachments are located preferably as far as may be from the solid fuel re -box A, and at one or more of the pot holes D, at the farther end of the stove top.

In the drawings I show two gas burners or heaters applied at the two end pot holes of the stove, which plan I prefer in practice and will now more particularly describe. ,g

The body or Iiamehead portions E, of the burners aresustained preferably at the centers of the pot holes D,at which, and either upon solid stove lids closing said holes or upon top rings or skeleton supports,'as at F, placed in the potholes, any form of cooking vessels may be heated by and above the burners. Each burner body or flame head E, is connected, to a detachable nipple or short length .of gas and air mixing the tube or pipe G, `which passes through a hole g, in the end wall of the stove and connects with the air chamber'H, having an opening h, admitting air to the burner frorn'outsideV the stove, thus supplying only pure atmospheric air to commingle within the mixing tube-with gas or fluid fuel admitted to the tube from a nipple fi, on a cock or valve I which is screwed into the 'chamberIL and connects with apipe J, ranging along the end of the stove and t0 which will be connected a rubber or other pipe leading from any suitablesource of gas or fluid fuel supply. When but one burner E, is used, the pipe J, will be dispensed with and the supply pipe will be connected to the cock I, as will readily be understood.

By using the nipple G, to connect the gas burner head with the air chamber H, nipples of any requisite length may be employed to bring the burner flame head directly to the center of the pot hole D, at which it is used While the inner end of the chamber H, will close any opening which may be, left around the nipple or mixing tube at the hole g, and thus prevent cold air entering at said hole to the oven heating liuc b, of the stove. The air chamber I-I, is held closely to the side of the stove body at the hole g, by the fastening of the burner head to the stove, which fastening may be effected in any approved manner. I prefer, however, and as an improved construction, to cast aV suitable leg support e', on the burner head and fasten said support by a bolt e2, which passes through it and the top plate b', of the oven B, and receives its nut e3, inside the oven where the heat will never be sufficiently high to burn the nut fast on the bolt, thus allowing ready removal or renewal of the entire auxiliary gas heating apparatus whenever desired or necessary for cleaning or other purposes. l

It is well known that in solid fuel, or coal and Wood burning stoves, soot, dust and ashes are carried by the draft into and through the fines leading from the fire box to the chimney fiue connection, whether these lines be long or short or surround a baking oven or not.y These floating particles of dust or soot would more or less quickly close up or clog the liame apertures and interior of a gas burner placed within draft flue of the stove.

An important feature of my invention consists in providing a gas or fluid fuel burner adapted to be thus located, with an adjustable guard in the form of a permanently attached cap plate andby means .of which the flame apertures of the burner may be closed to exclude dust, soot or ashes when the burner is not in' use. When the dust guard is adjusted to open the flame apertures as when the burner is in use, the sweep of the gaseous fuel through the mixing tube and flame apertures makes the burner self-clearing or forbids entrance of dust at the iiame apertures thereof.

In Figs. 4 and 5 of the drawings, the dust guard is shown as a cap or plate K, having a pendent peripheral fiange Zawhich when the plate yis lifted a little and held up, leaves the peripheral flame apertures e, of the burner E, open while the burner is lighted and in use and during this time the lower edge of the guard flange lc, forms an vefficient lateral or horizontal spreader for the upwardly curving flames and makes the burner more effective. When the cap K, is lowered asin dotted lines in Fig. 2, its flange 7c, completely ycloses or covers the flame apertures e, and thus excludes dust, soot or ashes from them and from the interior of the burner which assures maintenance of the burner in proper werking condition. Any suitable means may be employed to adjust and hold up the cap plate K, the means shown being opposing inclines c4, on the burner top plate and the under side of the cap plate, and as will be understood from the detail View of the top plate shown in Fig. 3 of the drawings. As the cap K, is turned in one direction it will rise and uncover or open the burner Iiame apertures and when turned in the other direction or reversed in movement the cap will fall and cover orclose the flame apertures to exclude dust therefrom.

I show in Figs. 6, and 7, of the drawings a guard comprising a cap plate L, having a series of radially disposed arms or parts Z, each provided at its end with a pendent flange Z', and whereby as the cap is simply turned partly around on the burner head, the parts Z, will close flame holes e, at the top of the burner and the iian ge Z', will close flame holes e, at the edge or periphery of the burnerhead.

A reversal of this movement opens the flame holes when the burner is to be lighted for use. In both Vforms of dust guard shown, the cap plate is mounted to turn on a central stud m,

on the burner head top plate, and the cap is In practice, I find that the draft through the` stove flues from the fire box A, tends to draw the iiame and heat of the auxiliary gas burner downward and rearward toward the stove pipe outlet C, to the chimney flue and this causes the burner flames to iicker unduly and to be diverted somewhat from their legitimate maximum heating effect. This difficulty may be obviated when the solid stove lid is in use above the lighted burner by manipulating or partly closing the ordinary damper c, of the pipe outlet C, but as it Iis often preferred to use an open top ring or skeleton cooking vessel support with a gas burner, my invention provides for a combination of a damper or draft shut off with such a top ring F, used in the stove pot hole nearest the pipe C. I accomplishvthis by casti-ng on or attaching to the ring F, a pendent plate vor flange f, which extends partly around the ring and as closely as may be to the bottom of the stove draft flue, which in this case is the top plate ZJ', of the oven B. By simply turning the ring F, in the pot hole, the stove iiue passage to the pipe C, may be closed more or less by the pendent damper plate f,.to cut off the draft as much as may be necessary to prevent undue ickering or diversion of the flame or heat of the burners E, towardthev chimney flue pipe or outlet of the stove and thus assure maximum heating effect of the burners when the pot hole rings are used to sustain cooking vessels above the burners.V

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- IIO 1. The combination, with a solid fuel stove ,l

or range, of one or more auxiliary gas or fluid fuel burners located within the stove body, said burners provided with marginal flame apertures and a permanently attached and adjustable cap plate having a peripheral flange or parts adapted when said cap is operated, to open said flame apertures when the burner is to be used or to close said apertures and exclude ashes or dust from the burner when it is not in use, substantially as de scribed.

. 2. The combination, with a solid fuel stove or range, of one or more auxiliary gas or fluid fuel burners located within the stove body and having a mixing tube communicating with an atmospheric airinlet outside the stove body, said burners provided with marginal flame apertures, and a permanently attached and adjustable cap plate having a peripheral fiange or parts adapted when the cap is operated to either open or close the burner flame apertures, substantially as described.

3. The gas or uid fuelburner having marginal flame apertures and provided with a permanently attached and adjustable cap plate having a peripheral flange or parts adapted when the cap is operated to either open or close the burner llame apertures, substantially as described.

4. The gas or iluid fuel burner, having marginal flame apertures at its head and provided with a cap or plate having a pendent peripheral flange adapted to close the flame apertures, said burner head and dust excluding cap, provided with inclines for raising and lowering the cap when it is turned in opposite directions, substantially as described.

5. The gas or uid fuel burner having a stud or boss on its head piece, a revoluble or movable. cap plate on said stud and adapted to open and close the iiame apertures of the burner, a retaining Washer or piece at said stud for the cap plate, and a fastening bolt holding the retainer in place While connecting the parts of the burner head, substantially as described.

6. The combination, with the stove body having a pot hole D, of a gas or uid fuel burner as E, Within the body at said pot hole, a nipple or mixing tube Gr, communicating with the burner head, a chamber H, connected to the tube G, and having a gas nipple t', and atmospheric air inlet h, outside the stove body, and abracket or leg supporte', next the burner head and secured to the oven top plate b', by bolts having nuts inside the oven, substantially as described.

GEORGE W. GRAVES.

Witnesses:

JOHN W. VAN ZILE, WM. J. BARKER. 

